Service-pipe box



(No Model.)

' J. TJCAHILL & L. MANGOLD.

SERVICE PIPE BOX.

No. 279,703. Patented June 19,1883

I r y I I 'TfiZZemsea, ra/0252270,

UNITED STATES JOHN T. OAHILL AND LEONARD MANGOLD, OF OHATTANOOGA,TENNESSEE.

PATENT QFFICE.

SERVICE-PIPE BOX.

I SPECIFICATION forming part of Letters Patent No. 279,703, dated June19, 1883.

Application filed March 2,1883. (No model.)

I LEONARD MANGOLD, citizens of the United States, residing atChattanooga, in the county of Hamilton and State of Tennessee,have'invented certain new'and useful Improvements in Service-Pipe Boxes;and we do declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same, reference being hadto the accompanying drawings, and to the letters and figures ofreference marked thereon, which form a part of this specification.

This invention relates to certain improvements in street-boxes for theprotection of and to give access to the cooks of gas and waterservice-pipes; and it has for its object to provide a box that may bereadily set in the ground over the pipe, and the cover of which may besecurely fastened down so that it cannot be raised, except by personsfamiliar with the construction of its locking devices. These objects weattain by the means illustrated in the accompanying drawings, in which-Figure 1 represents a perspective View of our improved box with thecover raised, showing the interior locking mechanism; and Fig. 2represents a top view of the same, showing the cover closed.

The letter A indicates the body of the box, which is constructed intwotelescoping parts, so that its height may be conveniently adjusted tothe depth of the pipe. The lower end of the lower part is made flaringand slotted, so as to set over the pipe and the valve or cook. The upperpart of the box is provided with a flat plate, B, having a centralopening, 0, at one side of which are formed slots D, in which arepivoted the arms E of the lid or cover, forming a hinged joint for thesame. The cover is provided with a circular projection, F, which setsdown into the openingxO when the cover is closed, and the upper partofsaid cover consists of a flat plate, G which rests upon the plate B whenthe cover is'down. The upper part of the cover has a central depression,and through the center of said cover extends a short shaft or stud,which at its lower end is provided with two lugs extending at rightangles to each other and formed on different planes, the outer or upperend of said shaft or stud being provided with a cross-bar, H, which isadapted to turn freely in the circular recess. The plate B, at one sideof the opening 0, below, is formed with an inclined cam-bearing, I andopposite the hinged connection, with a curved passage, K, to permit thelugs to pass into and out of the opening as the door is closed andopened, as more fully hereinafter specified. The box at the juncture ofthe upper main portion and its flat plate is provided withstrengthening-brackets L, as indicated'in Fig. 1 of the drawings.

When the door is closed and locked the cross-bar at the top of the doorwill be in the position shown in Fig. 2 the upper lug being directlyunder the end of the crossbar H and the lower lug under the hingedportion of the cover and top plate, 0, as indicated in dotted lines inFig. 2. cross-bar is turned until the point A comes opposite B, when thedoor is partly lifted, the upper lug lifting up through the curvedpassage K. The cross-bar is then turned until the point A comes opposite(I, when the cover may be wholly lifted, the lower lug then lifting outthrough the curved passage.

To open the door the' Having thus described our invention, what weclaim, and desire to secure by Letters Patent, is- 4 The combination, ina street-box for water and gas service pipes, of the main body having aflat plate at its upper end provided with a cylindrical opening, withthe hinged cover, provided with a central shaft having lugs at rightangles to each other, and the cross-bar, the flat plate at the openingbeing provided with a passage for the lugs on the cover, and with aninclined cam-bearing to hold said lug, substantially as specified.

In testimony whereof we affix our signatures in presence of twowitnesses.

' JOHN T. CAHILL.

LEONARD MANGOLD. WVitnesses:

J. K. KUHN, S. L. WILLIAMs.

